What can you determine about the feasibility of a reaction if the enthalpy is positive and the entropy is positive? I NEED THIS ANSWERED!!

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration

How are isotopes of the same chemical element alike? how are they different?